Projection Screen Tip #3

In front-projection applications, control of ambient light near the projection screen surface will enhance the contrast and brightness of an image being projected. In order to achieve this, place the screen in an area where ambient lighting is low or controllable.

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You can adjust the
brightness and contrast of your monitor to improve the readability of text and
to make digital pictures appear more like they'll look when printed.

To improve the results
when adjusting the brightness and contrast settings for your display, use
Display Color Calibration. (Display Color Calibration helps you adjust these
color settings and others.) For more information about calibrating your display
color in Windows,
seeCalibrate your display.

The way you adjust
brightness and contrast varies and depends on your specific display.

•Brightness and contrast buttons on the front of the monitor. Some monitors have brightness and contrast
controls on the front and use the standard symbols shown in the following
image.

•On-screen menu. You can change the brightness and contrast settings for some
displays by using an on-screen menu, and then setting the brightness and
contrast in the resulting menu. Many times, you can view the on-screen menu by
pressing a button-possibly labeled Menu-on the front of the monitor.

You can adjust the brightness and contrast of your monitor to improve the readability of text and to make digital pictures appear more like they'll look when printed.

To improve the results when adjusting the brightness and contrast settings for your display, use Display Color Calibration. (Display Color Calibration helps you adjust these color settings and others.)

The way you adjust brightness and contrast varies and depends on your specific display.

Brightness and contrast buttons on the front of the monitor.

Some monitors have brightness and contrast controls on the front and use the standard symbols shown in the following image.

Brightness and contrast symbols

On-screen menu. You can change the brightness and contrast settings for some displays by using an on-screen menu, and then setting the brightness and contrast in the resulting menu. Many times, you can view the on-screen menu by pressing a button-possibly labeled Menu-on the front of the monitor.

Laptop display. Laptop displays don't have brightness or contrast buttons on the front.

For a majority of laptops, there isn't a control for setting the contrast.

However, you can set the brightness of many laptops by pressing and holding the Fn key, and then pressing a function key to decrease brightness ( ) or increase brightness ( ).

Adaptive brightness is a feature in Windows that uses a light sensor to automatically adjust the display brightness to match the lighting conditions in your computer's surroundings.

To use adaptive brightness, you must have light sensors installed and enabled on your computer.

To determine if your laptop or computer monitor supports adaptive brightness, look for the Enable adaptive brightness setting in Power Options (mentioned in the following procedure) or check the information that came with your computer.

To turn adaptive brightness on or off

Open Power Options by clicking the Start button , clicking Control Panel, clicking System and Security, and then clicking Power Options.

Under any plan, click Change plan settings.

Click Change advanced power settings.

In the list, expand Display, and then expand Enable adaptive brightness.

To turn adaptive brightness on or off when your computer is running on battery power, click On battery, and then, in the list, click On or Off.

To turn adaptive brightness on or off when your computer is plugged into an outlet, click Plugged in, and then, in the list, click On or Off.

I would think that the black level and the contrast should be all the way up not down the black level is your brigthness . if lhese are all the way up you might try adjusting the screen controls inside the tv if you know how.

Normally, the screen control being up a little to high, would cause this problem.
If no one has worked on this unit when it started may be a sign of something else, for example, the 200 volt line may be running a little low.
Check the brightness and contrast for starters and if that doesn't help, then, the screen control would be my next step.
Hope this helps.

*The brightness control setting determines how bright your picture will be.
*The contrast control sets the gain of the video circuit. This determines the difference between dark and light scenes. Low contrast settings make the picture "hazy". High contrast settings make the picture more distinction between dark and light scenes.
*The sharpness control determine the frequency
response of the video circiut. High sharpness settings give better resolution but also shows
more noise in your picture. Lower sharpness settings smoothe out the picture removing noise but also fine detail. It needs to be set for the best all around picture.
*Picture Enhancement is pre-set adjustments which give you
different picture qualities. You just select the one you like.
Stargazer